Stefan van der Walt wrote: > A "nice C level api" sounds like the definition of oxymoron :) Why > would we argue for more C than absolutely necessary in a Python-based > library?
Well, it's more often absolutely necessary than you might think. Any common operation on the array should be written in C to avoid the Python function call overhead. We learned that with recarrays. The a.column_name notation (equivalent to a['column_name']) in implemented in a Python method __getattribute__. If you happen to use this in a tight loop, you'll find that __getattribute__ is a bottleneck. Unfortunately, the methods you might want to add or override on an ndarray subclass are going to be the ones that you would want to be efficient. -- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
